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Updated: May 30, 2026
Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
Orthorhombic polar Nd-doped BiFeO3 thin film on MgO substrate
I N Leontyev1, Yu I Yuzyuk, P-E Janolin
1Laboratoire Structures, Propriétés et Modélisation des Solides, UMR CNRS-École Centrale Paris, 92295 Châtenay-Malabry Cedex, France. i.leontiev@rambler.ru
Abstract:
A Nd-doped BiFeO(3) thin film deposited on MgO substrate was studied by synchrotron diffraction. The ferroelectric nature of the film is proven by in-plane remanent polarization measurement. The highest possible symmetry of the film is determined to be orthorhombic, within the Fm2m space group. Such a structure is rotated by 45° with respect to the substrate and is consistent with tilts of oxygen octahedra doubling the unit cell. This polar structure presents a rather unusual strain-accommodation mechanism.
